Improved machine for making railroad-chairs



M' f//Jmz MPETERS, PHOTDIITHOGRAPHER. WASHINGTON. D C.

tent tritt.

Lclters'lctent No. 92,494, dated July 13, l1869.

IMPROVED MACHINE FOR MAKING- RAILROAD-CHAIRS.

The Schedule referred to in these Letters Patent and making pali: of the same the bed-piece, for the 4reception of a previously-punched `chair-blank, by nieans of' which the-spike-holes are kept open when the metal is swaged to" form the chair; the arrangement beingsucll, also, that the pins may beextended above the blank, and the metal be formedv around them in such ntanner as toA leave a recess in the solid part of the chair, for 'purposes hereinafter described.

Figure 1 represents a vertical section through the anvil-block, bed-piece, and chair-plate,.the parts relating to my invention being shown in full section, with the connecting parts in red outline;

Figure 2 represents a plan view of the bed-piece;

Figure 3, a vertical section, showing the chair as formed about the pins;

Figure 4, a view of the chair complete;

Figure 5, a View .of the chair-plate ready for the machine; and

. Figure 6, a section of the chair through the spikeholes.

Io enable others' skilled in the. art to which my invention appcrtains, to make and use the same, I will now describe fully the nature of my improvements, and` their operation in connection with the machine.

A represents the anvil-block, upon which is located the bed-piece B. This bed-piece is rendered adjustable, so as to receive a'wider or narrower chair-plate,

as may be desired, by means of' the packing b, more' or less of which may be inserted between the two parts ofthe bed-piece, the whole being firmly held, when suitably arranged, by means of the screws b b, as clearly shown in the drawings.

c c represent the. pins, which serve to keep open the spike-holes in the base, and about which the metal is formed. These pins are held in the sliding blocks D, in the.- bed-piece. It will be observed ,that they are constructed with one of their sides higher than the other, or, if desired, they may be constructed in two .parts of unequal length.

The object of' this arrangement is as follows:

In using the chairs for holding rails, it is usually desired that the spike should pass partly through the rail, in order to key itato its seat, and it is essential that the chair should closely clamp the rail. It therefore, in such cases, becomes necessary that the spikehole should be formed partly in the solid metal of the chair, as well as in the flange. By observing the dotted lines in fig. (3 of' the drawing, which shows the position of th spike when in place, this necessity will be fully understood. But, in practice, it is found impossible to punch a hole through the solid metal and the ange at the same time, and the pins c c are therefore provided, to form-a reces.c in the solid part.

' The sliding blocks l), in which thepins are placed, are tapering in form, as is clearly shown in iig. These may be adj usted longitudinally in either direction, to suit diderent lengths of` chairs, and are held in place, when properly located, by means of the screws el.

'lhe operation is as follows:

The chair-plate of the proper shape and size having been provided, has first the spike-holes punched, in the v base, and is slightly bent, as shown in fig. 5. It is then placed upon the bed-piece, the higher part of the pins extending up on each side of' the former or plunger O, as shown in figs. l and 3. In this position. if

is then swaged, a description of which process is fully given in my former patent. l

By observing iig. 3, in which the chair is shown as swaged, it will be observed that the pins keep the spike-holes clear in the base of the chair, and also form a recess vin the solid part. Ihe chair 'being now removed from the machine, is easily punched through the flange for the continuation of the spike-holes, and

thus completed, is ready for use.

- Having thus fully described my invention, l

What I claim,`and desire to secure by Letters IatrIhis specification signed and witnessed, this 19thday of' November, 1868.

' XVM. VAN ANDEN.

\Vitnesses:

ItoB'r. N. PALMER, GHAnLEs A. CANDEE. 

